U.S. patent number 5,577,684 [Application Number 08/433,356] was granted by the patent office on 1996-11-26 for winding machine with support cylinders.
This patent grant is currently assigned to Jagenberg Papiertechnik GmbH. Invention is credited to Hartmut Dropczynski, Michael Kuhnhold.
United States Patent |
5,577,684 |
Dropczynski , et
al. |
November 26, 1996 |
Winding machine with support cylinders
Abstract
A winding machine for winding a paper or cardboard web on cores
in a bed between two support cylinders has an ejector beam
swingable about the input support cylinder and an ejection surface
which extends radially with respect to the latter and is associated
with a lifting roller on one side of that surface. The lifting
roller has a free wheel lock which allows the lifting roller to
rotate in the same sense as the input support cylinder but prevents
rotation of the lift roller in the opposite sense.
Inventors: |
Dropczynski; Hartmut (Dormagen,
DE), Kuhnhold; Michael (Monchengladbach,
DE) |
Assignee: |
Jagenberg Papiertechnik GmbH
(Neuss, DE)
|
Family
ID: |
6499518 |
Appl.
No.: |
08/433,356 |
Filed: |
May 2, 1995 |
PCT
Filed: |
October 05, 1994 |
PCT No.: |
PCT/EP94/03288 |
371
Date: |
May 02, 1995 |
102(e)
Date: |
May 02, 1995 |
PCT
Pub. No.: |
WO95/09795 |
PCT
Pub. Date: |
April 13, 1995 |
Foreign Application Priority Data
|
|
|
|
|
Oct 6, 1993 [DE] |
|
|
43 34 029.6 |
|
Current U.S.
Class: |
242/533.2;
242/542 |
Current CPC
Class: |
B65H
19/2246 (20130101); B65H 19/30 (20130101); B65H
2301/4148 (20130101); B65H 2301/4172 (20130101); B65H
2301/41826 (20130101); B65H 2301/414866 (20130101) |
Current International
Class: |
B65H
19/30 (20060101); B65H 19/22 (20060101); B65H
019/30 () |
Field of
Search: |
;242/533.2,533.3,542,521,526.1 |
References Cited
[Referenced By]
U.S. Patent Documents
|
|
|
4789109 |
December 1988 |
Kyytsonen et al. |
5222679 |
June 1993 |
Dropczynski et al. |
|
Foreign Patent Documents
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|
|
|
|
|
|
3811871A1 |
|
Oct 1989 |
|
DE |
|
4003504A1 |
|
Aug 1991 |
|
DE |
|
2065081 |
|
Jun 1981 |
|
GB |
|
2183610 |
|
Jun 1987 |
|
GB |
|
Primary Examiner: Jillions; John M.
Attorney, Agent or Firm: Dubno; Herbert
Claims
We claim:
1. A winding machine for winding a web of material comprising:
two driven support cylinders forming a winding bed between them, a
material web being deflected by one of the support cylinders and
guided from underneath into the winding bed; and
a device for lifting a fully-wound winding roll from said one of
said support cylinders for ejection of the fully-wound roll from
the winding bed, said device comprising:
a rotatably supported lifting roller,
an ejector beam swingable about said one of said support cylinders
in the direction of the winding bed and having an ejection surface
extending approximately radially with respect to said one of said
support cylinders and which ends at a distance from said one of
said support cylinders,
means for supporting said lifting roller for swinging said lifting
roller together with the ejector beam, said lifting roller being
journaled to rotate in the same direction as said one cylinder in a
free space between the ejection surface and said one of said
support cylinders, said lifting roller projecting peripherally with
respect to the ejection surface; and
a free-wheel lock preventing the lifting roller from rotating in a
direction opposite to a direction of rotation of said one of said
support cylinders.
2. The winding machine defined in claim 1 wherein the ejection
surface is swingably supported at a side of the ejector beam
opposite said lifting roller and a core channel is formed in the
ejector beam underneath the ejection surface.
3. The winding machine defined in claim 1 further comprising a core
insertion device with a core channel swingable about the other of
said support cylinder in a direction towards the winding bed.
4. The winding machine defined in claim 1 further comprising a
perforating device upstream of said one of said support cylinders
for weakening the web and a device for applying an adhesive to the
web.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national phase of PCT/EP94/03288 filed 5 Oct.
1994 and based, in turn, on German national application P 43 34
029.6 filed 6 Oct. 1993 under the International Convention.
The invention relates to a winding machine with support cylinders
for winding webs of material, particularly paper or cardboard webs,
onto cores.
BACKGROUND OF THE INVENTION
In winding machines with support cylinders roll ejection devices
and core insertion devices are known which during roll change eject
the full rolls from the winding bed and introduce new cores into
the winding bed.
From DE-OS 38 11 871 it is known to use as an ejection device an
ejector beam provided with an ejection surface, swingable about the
input support cylinder, which reaches up to the support cylinder
and whose upper limit in its forward swung position extends into
the region of the apex line of the output support cylinder. In this
way fully-wound rolls with a small diameter can be clamped between
the ejection surface of the ejector beam and the support cylinder
over which they are supposed to be ejected and can be lifted from
the winding bed by a rotation of this support cylinder.
DE-OS 40 03 504 describes a generic winding machine with support
cylinders whose ejection device is an ejector roll, which is
supported on lateral swingable swivel arms freely rotatable about
the axis of the input support cylinder which deflects the web from
underneath into the winding bed. Upstream of the input support
cylinder a device for applying adhesive and a perforating device
for weakening the web are arranged. At the moment of roll change,
the web is first weakened and the weakened portion is moved into
the winding bed. The severing of the web takes place subsequently
by increasing the traction due to the rotation of the winding roll
with the output support cylinder, while the ejector roll slightly
lifts the winding roll from the input support cylinder. The
fully-wound rolls are subsequently ejected by the ejector roll over
the output support cylinder.
In order for the ejector roll to be capable of ejecting winding
rolls with a larger diameter (e.g. 1000 mm) over the output support
cylinder, it is necessary to arrange it at a certain radial
distance from the input support cylinder. However then it is not in
a position to lift winding rolls with a smaller diameter (e.g. 200
mm) from the input support cylinder for the cutting of the web.
OBJECT OF THE INVENTION
It is the object of the invention to improve the roll ejection
device in a winding machine with support cylinders so that it is
capable to lift winding rolls with a great variety of diameters
from the input support cylinder for cutting, as well as to eject
them from the winding bed over the output support cylinder.
SUMMARY OF THE INVENTION
This object is attained, in accordance with the invention in a
winding machine with support cylinders for winding webs of
material, particularly paper or cardboard webs, wherein two driven
support cylinders form a winding bed between them and the material
web is deflected by an input support cylinder from beneath into the
winding bed. A device is provided for lifting a fully-wound roll
from the input cylinder and for ejection of the fully wound roll
from the winding bed. This device can comprise a rotatably
supported roller which can swing about the input support cylinder
in a direction of the winding bed. An ejector beam is swingable
about the input support cylinder and has an ejection surface
extending approximately radially of the input support cylinder and
ending at a distance therefrom. The lifting roller is swung
together with the ejector beam and is journaled to rotate in the
same direction as the input support cylinder in a free space
between the ejection surface and the input support cylinder. The
lifting roller projects peripherally with respect to the ejection
surface.
According to the invention, for the ejection of the fully-wound
winding rolls from the winding bed an ejector beam with an ejection
surface is used, which for the ejection of winding rolls with a
large diameter is arranged at a sufficient distance from the input
support cylinder. For lifting winding rolls with a smaller diameter
prior to the cutting of the web, in the free space between the
ejection surface and the support cylinder a lifting roll is
arranged at the shortest possible distance from the support
cylinder which is thus capable of lifting winding rolls with small
diameter. During the lifting of the winding rolls first of all
contact with the ejection surface is avoided, so that the winding
rolls can be rotated without problems by the output support
cylinder for the cutting of the web and/or for making adherent
seams.
The ejection surface can be swingably supported at a side of the
ejector beam opposite the lifting roller and a core channel can be
arranged in the ejector beam underneath the ejector surface.
Alternately, a separate core insertion device can be provided with
a core channel swingable about the output support cylinder in a
direction toward the winding bed. A free-wheel lock can prevent the
lifting roller from rotating in a direction opposite to direction
of rotation of the input support roller.
A perforating device can be provided upstream of the input support
cylinder for weakening the web and a device can be provided for
applying an adhesive means to the web.
With the core insertion device integrated in the ejector beam the
new cores can be inserted at the same time as the ejection of the
fully-wound rolls. A separate core-insertion device makes possible
the use of cores with a very large diameter.
The free-wheel lock acting in a single direction makes possible the
removal from the winding bed of winding rolls whose diameter is too
small for ejection. These winding rolls can be clamped between the
output support cylinder and the lifting roll and can be lifted by a
rotation of this support cylinder until they are clamped between
the ejection surface and the support cylinder and are this way
further lifted.
BRIEF DESCRIPTION OF THE DRAWING
The above and other objects, features, and advantages will become
more readily apparent from the following description, reference
being made to the accompanying drawing in which:
FIG. 1 is a schematic side view of a winding machine with support
cylinders according to the invention during winding;
FIG. 2 is a similar view which shows the start of a roll
replacement after the adhesive strip has been applied and the web
has been perforated;
FIG. 3 is another view similar to FIG. 1 which shows the lifting of
the winding roll for the cutting of the web;
FIG. 4 is yet another schematic side view which shows the ejection
of a winding roll;
FIG. 5 is a similar view which shows the insertion of a new winding
core;
FIG. 6 is a side view which shows the fastening of the initial web
portion to the new winding core;
FIG. 7 to 9 are side views to a larger scale which show the removal
of winding rolls with a very small diameter from the winding
bed;
FIG. 10 is a view similar to FIG. 1 which shows a winding machine
with support cylinders with a separate core-insertion device,
swingable about the output support cylinder.
SPECIFIC DESCRIPTION
The winding machine with support cylinders has two driven support
cylinders 1, 2, forming a winding bed 3 between them, so that the
winding rolls rest during winding on the support cylinders 1, 2.
The material web 6, preferably a paper or cardboard web, divided
into individual webs by a longitudinal cutting device 5, is
deflected from underneath by the input support cylinder 1, and is
guided through the gap between the support cylinders 1, 2 into the
winding bed 3 and is wound on aligned cores 7. Such winding
machines with double support rollers are widely known and described
for instance in DE-OS 32 07 461, so that the individual parts which
do not relate to the invention have not been described.
At each of the two frontal sides (ends) of the input support
cylinder 1 downwardly bent swivel levers 8 are supported in the
machine stand swingably about an axis coaxial with the axis of
rotation of the support cylinder 1, by means of a piston-cylinder
unit. The levers 8 carry on their upper side a roll-lifting and
roll-ejection device with an integrated core insertion mechanism,
which subsequently will be described more fully.
On the upper side of the radially extending part of each swivel
lever 8 and outside of the cross-section area of the support
cylinder 1 an ejection beam 9 extending over the work width is
fastened. The ejection beam 9 consists of support 10 with an
approximately fork-like cross section, which is open in the
direction of the inward swinging motion towards the winding bed 3.
At the free end of the arm of the support part 10 adjacent to the
support cylinder 1 a lifting roller 11 extending over the work
width of the machine, i.e. the axial length of the support
cylinders 1, 2, is supported at the smallest possible distance from
the support cylinder 1. The lifting roller 11 is freely rotatable
in the same direction of rotation--in the embodiment illustrated,
counterclockwise direction as the support cylinder 1. A rotation in
the opposite direction, i.e. the clockwise direction is prevented
by a free-wheel lock not shown in the drawing. At the free end of
the other arm of the support part 10 a lever 12 is linked, to which
the ejection surface 13 is fastened. The ejection surface 13 can be
pivoted by means of a piston-cylinder unit 14 mounted on the bent
part of the swivel arm 8 about an axis parallel to the axis of the
support cylinder 1 and rests in its folded position on the arm of
the support part 10 which is adjacent to the support cylinder 1.
The piston-cylinder unit 14 is only indicated in FIGS. 1 to 6 and
described in detail in FIGS. 7 to 9. The ejection surface 13
projects so far outwardly in radial direction from the area of the
lifting roller 11 towards the support cylinder 1 that heavy winding
rolls can be ejected without problems from the winding bed over the
support cylinder 2 onto a swingable lowering platform 15 arranged
next to the support cylinder 2.
The support part 10 bears between its arms a core channel 16
extending over the working width, whereby the exit opening of the
core channel 16 between the lifting roller 11 and the lever 12 can
be opened and closed by horizontal swinging of the ejection surface
13. In order to make possible for the lifting roller 11 to slightly
lift a winding roll 4 from the support cylinder 1 without having
the winding roll 4 rest immediately against the ejection surface
13, it slightly projects peripherally with respect to the ejection
surface 13, when the latter folds down in ejecting position while
the exit opening of the core channel 16 is closed. In this way the
ejection surface 13 in down-swing position lies at an acute angle
with respect to the tangent to the outer side of lifting roller 11
running through the axis of support cylinder 1.
On the incoming side, shortly before the web 6 touches the support
cylinder 1, a perforation device 17 and subsequently, in the area
where the support cylinder 1 is wrapped by the web 6, a series of
adhesive dispensers 18 distributed over the work width, are
arranged. With the perforation device 17 the web 6 can be weakened
along a line running across it. The adhesive dispensers 18 apply a
series of double-sided adhesive tapes to the web 6, by means of
which the new initial web portions created after the cutting of the
web 6 are glued to the new cores 7 and the web ends are glued to
the fully-wound rolls 4. Underneath the gap between the support
cylinders 1, 2 a support 19 extending over the width of the machine
is provided, on which over the work width a series of free-running
bands 20 are fastened, which when the support 19 is raised can be
pushed against the input support cylinder 1 for holding the newly
created initial web portions in place after cutting.
In the winding machine with support cylinders shown in FIG. 1
during winding, a winding roll replacement as shown in FIGS. 2 to 6
is performed.
Already while one set of winding rolls 4 is wound, a new set of
winding cores 7 is inserted in the core channel 16 and the latter
is closed by swinging down the ejection surface 13. Subsequently
the machine is stopped, and the web 6 is weakened by the
perforating device 17 along a weakening line 21. After the machine
is restarted the adhesive-tape dispensers 18 apply adhesive strips
22 on both sides of the weakening line 21, and the support 19 is
raised with its point through the support cylinder gap, so that the
bands 20 hold the web 6 against the support cylinder 1. The
lowering platform 15 is swung upwardly towards the support cylinder
2 for receiving the fully-wound winding rolls 4 (FIG. 2).
When the weakening line 21 is located in the gap between the
support cylinders 1, 2, the machine is stopped again and the
fully-wound winding rolls 4 are slightly lifted by the lifting
roller 11 from the support cylinder 1, whereby they do not rest
against the ejection surface 13 of the ejector beam 9. Subsequently
the support cylinder 2 is rotated counterclockwise, thereby the web
6 is torn along the weakening line 21, if this has not already
occurred when the winding rolls 4 were lifted. As shown in FIG. 3
the winding rolls 4 are rotated until the web ends with a part of
the adhesive stripes 22 have been moved through the gap between the
winding rolls 4 and the lifting roller 11. Thereby the web ends are
glued to the fully-wound winding rolls 4. The swivel arms 8 are
subsequently swung further upwards, so that the ejection surface 13
presses the winding rolls 4 away over the support cylinder 2 onto
the lowering platform 15. Thereby the core channel 16 with a set of
new cores 7 moves into the winding bed 3 (FIG. 4). In this position
the ejection surface 13 is swung up, so that the cores 7 roll into
the winding bed 3, guided by the inside of the ejection surface 13
(FIG. 5). During the subsequent return swing of the swivel arms 8
the cores 7 roll into their winding position in the winding bed
3.
After the pressure roller 23 is applied, the winding machine is
started. Thereby the initial web portions provided with an adhesive
strip 22 are glued to the cores 7 (FIG. 6). After the start of the
winding the support 19 with the bands 20 is lowered and the winding
machine can be accelerated to full winding speed.
If winding rolls 4 having a diameter smaller than the minimal
diameter required for ejection have to be removed from the winding
bed 3, e.g. when shortly after the start of the winding operation a
complete set of rolls have to be declared rejects, this is done in
the manner illustrated in FIGS. 7 to 9.
With a new set of cores 7 lying in the core channel 16 the swivel
arms 8 are swung over the support cylinder 1 until the lifting
roller 11 rests against the winding rolls 4 to be ejected and
presses them with a defined force against the support cylinder 2
(FIG. 7). Subsequently the support cylinder 2 is driven in
clockwise direction. Due to the rotary motion of the support
cylinder 2 the rolls are lifted, since the free-wheel lock of the
lifting roller 11 does not allow rotary movements in clockwise
direction. The piston-cylinder unit presses the swivel arms 8 in
the direction of the support cylinder 2, so that the ejection
surface 13 comes to lie against the rolls 4 immediately after they
have been lifted enough, so that they can no longer be held by the
lifting roller 11. Through further rotation of the support cylinder
2 the winding rolls 4 are pushed upwards between the support
cylinder 2 and the ejection surface 13 until they reach the area of
the apex line of the support cylinder 2 (FIG. 8), where due to the
upward swing of the ejection surface 13 over the apex of the
support cylinder 2 they are pushed away onto the lowering platform
15. When the ejection surface 13 is swung up, the new winding cores
7 are simultaneously deposited in the winding bed (FIG. 9). The
initial web portions are then fastened to the new cores 7 in the
manner described in FIG. 6.
FIG. 10 shows a winding machine with support cylinders with a
separate core insertion device 24 swingable about the output
support cylinder 2. In order to avoid repetition, the components
which are identical to the ones of the embodiment examples
according to FIGS. 1 to 9 have corresponding reference numerals. A
separate core insertion device 24 can be required when cores 7 with
such a large diameter (for instance larger than 230 mm) are used,
that there is not enough space in the ejector beam 9 to accommodate
the insertion device. The core channel 16 is mounted to the ends of
two swivel arms 25 which can be swung upwards in counterclockwise
direction from a lowered core-receiving position into an
approximately vertical position, wherein the cores 7 roll from the
core channel 16 into the winding bed 3. The ejector beam 9 carries
lifting roller 11 in an extension of the ejection surface 13. Also
in this embodiment the lifting roller 11 slightly projects
peripherally with respect to the ejection surface 13, and therefore
the ejection surface 13 runs at an acute angle with respect to the
tangent to the outer side of lifting roller 11 which passes through
the axis of support cylinder 1. In this way, when the winding roll
is lifted by the lifting cylinder 11, it has no contact with the
ejection surface 13. The upper limit that the ejection surface 13
reaches in its forward swung position is up into the area of the
apex line of the output support cylinder 2, so that winding rolls
with a very small diameter can be clamped between the ejection
surface 13 and the support cylinder 2 and can be removed from the
winding bed 3 by a rotation of the support cylinder 2.
The winding roll replacement takes place in a manner similar to the
method according to FIGS. 2 to 6, with the difference that after
the winding rolls have been ejected and have been lowered on the
lowering platform 15, first the ejector beam 9 is swung back in its
waiting position and subsequently the new cores 7 are introduced in
the winding bed 3 by horizontally swinging the swivel arms 25
towards it. The new initial web portions can be glued to the new
cores 7 already during the return swing of the core channel 16. In
the embodiment of FIG. 10 a roll replacement requires more time,
because the new cores 7 are not introduced into the winding bed 3
at the same time with the ejection of the fully-wound rolls 4, this
operation taking place in a separate step.
* * * * *